* {
    box-sizing:border-box;
}
body{
    margin:0;
    padding:0;
    border:0;
}
body{
    font-size: .2rem;
    color: #333;
}
img{
    vertical-align: middle;
}
img{
    border: 0;
}
.port{
    width: 100%;
    max-width: 7.2rem;
    margin: 0 auto;
}
.b1{
    text-align: center;
}
.b1 img{
}
.b2{
    display: inline-block;
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    top:5rem;
}
.b2 a{
    width: 5rem;
    line-height: 1rem;
    border-radius: .5rem;
    display: block;
    text-align: center;
    background: #f60;
  margin: 0 auto;
}
.b2 a span{
    font-size: .3rem;
    color: #fff;
}
a{
text-decoration: none;
    outline: 0;
}
